13256720

素因数分解:

$2^4\times 5^1\times {\mathrm{165709}}^1$

素因数の和:165722

約数の個数: 20

約数和(自身を含む): 30822060

約数和(自身を除く): 17565340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 165709, 331418, 662836, 828545, 1325672, 1657090, 2651344, 3314180, 6628360, 13256720]

約数ペア:

[(1, 13256720), (2, 6628360), (4, 3314180), (5, 2651344), (8, 1657090), (10, 1325672), (16, 828545), (20, 662836), (40, 331418), (80, 165709)]